ASTM B271-11
(Specification)Standard Specification for Copper-Base Alloy Centrifugal Castings
Standard Specification for Copper-Base Alloy Centrifugal Castings
ABSTRACT
This specification establishes the requirements for copper-based brass or bronze centrifugal castings. Mechanical properties are determined from test bar castings and should meet the requirements listed herein. Brinell hardness readings should be taken on the grip end of tension test bars. All castings should not be repaired by welding without customer approval. UNS C95520 copper alloy castings are used in the heat treated condition only.
SCOPE
1.1 This specification establishes requirements for centrifugal castings of copper-base alloys having the nominal compositions shown in Table 1.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
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Designation:B271 −11
StandardSpecification for
1
Copper-Base Alloy Centrifugal Castings
This standard is issued under the fixed designation B271; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* 4.1.3 Copper Alloy UNS Number (Table 1) and temper
(as-cast, heat-treated, and so forth),
1.1 This specification establishes requirements for centrifu-
4.1.4 Dimensions or drawing number and condition (as-
gal castings of copper-base alloys having the nominal compo-
cast, machined, and so forth),
sitions shown in Table 1.
4.1.5 ASME Boiler and Pressure Vessel Code requirements
1.2 The values stated in either SI units or inch-pound units
(Section 9),
are to be regarded separately as standard. The values stated in
4.1.6 When castings are purchased for agencies of the U.S.
each system may not be exact equivalents; therefore, each
Government,theSupplementaryRequirementsinSpecification
system shall be used independently of the other. Combining
B824 may be specified.
values from the two systems may result in non-conformance
4.2 The following are optional and should be specified in
with the standard.
the purchase order when required:
2. Referenced Documents
4.2.1 Chemical analysis of residual elements (Section 6.3),
4.2.2 Pressure test or soundness requirements (Specification
2.1 The following documents in the current issue of the
BookofStandardsformapartofthisspecificationtotheextent B824),
referenced herein: 4.2.3 Approval of weld repair (Section 8),
2
4.2.4 Certification (Specification B824),
2.2 ASTM Standards:
4.2.5 Foundry test report (Specification B824),
B208 Practice for Preparing Tension Test Specimens for
4.2.6 Witness inspection (Specification B824),
Copper Alloy Sand, Permanent Mold, Centrifugal, and
Continuous Castings 4.2.7 Product marking (Specification B824), and
B824 Specification for General Requirements for Copper
4.2.8 Castings for seawater service (Section X1.2).
Alloy Castings
B846 Terminology for Copper and Copper Alloys
5. Materials and Manufacture
5.1 Castings in Copper Alloy UNS No. C95520 are used in
3. Terminology
the heat treated condition only.
3.1 Definitions of terms relating to copper alloys can be
found in Terminology B846.
6. Chemical Composition
4. Ordering Information
6.1 The centrifugal castings shall conform to the chemical
requirement shown in Table 2 for the Copper Alloy UNS
4.1 Orders for centrifugal castings under this specification
Numbers specified in the purchase order.
should include the following information:
4.1.1 Specification title, number, and year of issue,
6.2 These specification limits do not preclude the presence
4.1.2 Quantity (length or number) of castings,
of other elements. Limits may be established and analysis
required for unnamed elements agreed upon between the
manufacturer or supplier and the purchaser. Copper or zinc
1
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
may be given as remainder and may be taken as the difference
and Copper Alloys and is the direct responsibility of Subcommittee B05.05 on
Castings and Ingots for Remelting.
between the sum of all elements analyzed and 100 %.When all
Current edition approved Oct. 1, 2011. Published November 2011. Originally
named elements in Table 2 are analyzed, their sum shall be as
approved in 1954. Last previous edition approved in 2008 as B271 – 08. DOI:
specified in Table 3.
10.1520/B0271-11.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.3 It is recognized that residual elements may be present in
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
cast copper-base alloys. Analysis shall be made for residual
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. elements only when specified in the purchase order.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
B271−11
TABLE 1 Nominal Compositions
Copper Alloy Commercial Alum- Mang-
Classification Copper Tin Lead Zinc Nickel Iron Silicon
UNS No. Designation inum anese
Leaded red brass C83600 85-5-5-5 85 5 5 5 . . . . .
C83800 83-4-6-7 or commercial red brass 83 4 6 7 . . . . .
Leaded semi-red brass C84400 81-3-7-9 or valve composition 81 3 7 9 . . . . .
1 1 1 1
C84800 76-2 ⁄2-6 ⁄2-15 or semi-red brass 76 2 ⁄2 6 ⁄2 15 . . . . .
Leaded yellow b
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation:B271–08 Designation: B271 – 11
Standard Specification for
1
Copper-Base Alloy Centrifugal Castings
This standard is issued under the fixed designation B271; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1
´ NOTE—Appendix X1 was editorially corrected in April 2010.
1. Scope*
1.1 This specification establishes requirements for centrifugal castings of copper-base alloys having the nominal compositions
shown in Table 1.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
2. Referenced Documents
2.1 The following documents in the current issue of the Book of Standards form a part of this specification to the extent
referenced herein:
2
2.2 ASTM Standards:
B208 Practice for Preparing Tension Test Specimens for Copper Alloy Sand, Permanent Mold, Centrifugal, and Continuous
Castings
B824 Specification for General Requirements for Copper Alloy Castings
B846 Terminology for Copper and Copper Alloys
3. Terminology
3.1 Definitions of terms relating to copper alloys can be found in Terminology B846.
4. Ordering Information
4.1 Orders for centrifugal castings under this specification should include the following information:
4.1.1 Specification title, number, and year of issue,
4.1.2 Quantity (length or number) of castings,
4.1.3 Copper Alloy UNS Number (Table 1) and temper (as-cast, heat-treated, and so forth),
4.1.4 Dimensions or drawing number and condition (as-cast, machined, and so forth),
4.1.5 ASME Boiler and Pressure Vessel Code requirements (Section 9),
4.1.6 When castings are purchased for agencies of the U.S. Government, the Supplementary Requirements in Specification
B824 may be specified.
4.2 The following are optional and should be specified in the purchase order when required:
4.2.1 Chemical analysis of residual elements (Section 6.3),
4.2.2 Pressure test or soundness requirements (Specification B824),
4.2.3 Approval of weld repair (Section 8),
4.2.4 Certification (Specification B824),
4.2.5 Foundry test report (Specification B824),
4.2.6 Witness inspection (Specification B824),
4.2.7 Product marking (Specification B824), and
4.2.8 Castings for seawater service (Section X1.2).
1
This specification is under the jurisdiction ofASTM Committee B05 on Copper and CopperAlloys and is the direct responsibility of Subcommittee B05.05 on Castings
and Ingots for Remelting.
Current edition approved Oct. 1, 2008.2011. Published November 2008.2011. Originally approved in 1954. Last previous edition approved in 20062008 as B271 – 068.
DOI: 10.1520/B0271-08E01.10.1520/B0271-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*ASummary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
B271 – 11
TABLE 1 Nominal Compositions
Copper Alloy Commercial Alum- Mang-
Classification Copper Tin Lead Zinc Nickel Iron Silicon
UNS No. Designation inum anese
Leaded red brass C83600 85-5-5-5 85 5 5 5 . . . . .
C83800 83-4-6-7 or commercial red brass 83 4 6 7 . . . . .
Leaded semi-red brass C84400 81-3-7-9 or valve composition 81 3 7 9 . . . . .
1 1 1 1
C84800 76-2 ⁄2-6 ⁄2-15 or semi-red brass 76 2 ⁄2 6 ⁄2 15 . . . . .
Leaded yellow brass C85200 high copper yellow brass 72 1 3 24 . . . . .
C85400 commercial No. 1 yellow brass 67 1 3 29 . . . . .
C85700 leaded naval brass 61 1 1 37 . . . . .
High-strength yellow brass C86200 high-strength manganese bronze 63 . . 27 . 3 4 3 .
C86300 high-strength manganese bronze 61 . . 27 . 3 6 3 .
1 1
C86400 leaded manganese bronze 58 1 1 38 . 1 ⁄2 ⁄2 .
C86500 No. 1 manganese bronze 58 . . 39 . 1 1 1 .
C86700 leaded ma
...
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